The comet should remain viewable through telescopes until September as it approaches the Sun, then emerge again in December on its outbound leg.

A mystery alien object that has come from interstellar space has been ­spotted travelling through the solar system. The object, thought to be about 20km in diameter, is likely to be a comet or ...

These things take millions of years to go from one stellar neighborhood to another, so this thing has likely been traveling ...

This week, astronomers spotted the third known interstellar visitor to our Solar System. First detected by the Asteroid ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles (240 ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...